john/McRogueFace
1
0
Fork 0
Code Issues 28 Pull requests Projects Releases Wiki Activity

Mobile-"ish" emscripten support

Browse source 
Full screen "wasm-game" for viewport compatibility between desktop and
web interfaces. Viewport modes ("fit", "center", and "stretch") should
now work the same way under WASM/SDL and SFML. This should also enable
android or web-for-mobile aspect ratios to be supported more easily.
This commit is contained in:
John McCardle 2026-02-09 08:40:34 -05:00
commit 726a9cf09d
9 changed files with 282 additions and 46 deletions
Download patch file Download diff file Expand all files Collapse all files

25
src/GameEngine.cpp
View file

@ -15,6 +15,9 @@
#endif
#include <cmath>
#include <Python.h>
#ifdef __EMSCRIPTEN__
#include <emscripten/html5.h>
#endif
// Static member definitions for shader intermediate texture (#106)
std::unique_ptr<sf::RenderTexture> GameEngine::shaderIntermediate;
@ -84,7 +87,15 @@ GameEngine::GameEngine(const McRogueFaceConfig& cfg)
render_target = &headless_renderer->getRenderTarget();
} else {
window = std::make_unique<sf::RenderWindow>();
#ifdef __EMSCRIPTEN__
// Read actual canvas size from HTML template (may be fullscreen or layout-constrained)
// gameResolution stays at its default (1024x768) - the viewport system maps it to the canvas
int cw = 1024, ch = 768;
emscripten_get_canvas_element_size("#canvas", &cw, &ch);
window->create(sf::VideoMode(cw, ch), window_title, sf::Style::Titlebar | sf::Style::Close | sf::Style::Resize);
#else
window->create(sf::VideoMode(1024, 768), window_title, sf::Style::Titlebar | sf::Style::Close | sf::Style::Resize);
#endif
window->setFramerateLimit(60);
render_target = window.get();
@ -243,7 +254,9 @@ void GameEngine::changeScene(std::string sceneName, TransitionType transitionTyp
}
else
{
// Start transition
// Start transition with current game resolution
transition.width = gameResolution.x;
transition.height = gameResolution.y;
transition.start(transitionType, scene, sceneName, duration);
// Render current scene to texture
@ -829,8 +842,14 @@ void GameEngine::initShaderIntermediate(unsigned int width, unsigned int height)
sf::RenderTexture& GameEngine::getShaderIntermediate() {
if (!shaderIntermediateInitialized) {
// Initialize with default resolution if not already done
initShaderIntermediate(1024, 768);
// Initialize with game resolution from the engine instance
unsigned int w = 1024, h = 768;
if (Resources::game) {
auto res = Resources::game->getGameResolution();
w = res.x;
h = res.y;
}
initShaderIntermediate(w, h);
}
return *shaderIntermediate;
}